Actually any quality gas engine oil is "low ash" oil. Its just a matter of which has lower ash. Years ago I looked and Castrol GTX 30W had a lower ash content the "IH" oil along with a couple of other brands - formulations have changes since then so I don't know what is rated where today. IH just used it in marketing its oil. Most Group 4 synthetic oils have extremely low levels of sulfated ash - much lower than the advertised "Low Ash" CIH oil.
All gas engines benefit from low ash oil - not just IH engines.
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Today's Featured Article - Show Coverage: Argyle and Mt. Pleasant Labor Day Weekend Shows - by Cindy Ladage. The last fling before summer fades into fall and we get busy in the fields are the annual Labor Day tractor shows. Beginning on September 5th and running through the 7th, the Argyle Antique Gas and Engine Show is held at the Argyle State Park. Located in West Central Illinois, the pine forest was the setting for the opening of the 22nd show. This year we decided to try to sell a few tractor parts, literature and wrenches to offset my husband's buying sprees. Saturday
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